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I would like to block internet access in the browser (firefox) but when trying to do it with ufw it simply does nothing, try

sudo ufw deny 80
sudo ufw deny 8080
sudo ufw deny 443

but nothing, will they have any idea?

  • 6
    Instead of "deny", use "deny out" . Note that this will also block system software updates. If you just want to block browser access for particular users, please edit the question to clarify. – Mark Plotnick Feb 12 at 23:41

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